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axolotl/examples/gemma4/e2b-vision-lora.yaml
2026-04-10 16:46:17 -04:00

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# Gemma 4 E2B Vision LoRA
#
# Fine-tuning LM LoRA adapters on multimodal Gemma4 with vision/multimodal modules frozen.
# Uses the base ProcessingStrategy (auto-detects image_token from processor).
base_model: google/gemma-4-E2B-it
processor_type: AutoProcessor
freeze_mm_modules: true
plugins:
- axolotl.integrations.cut_cross_entropy.CutCrossEntropyPlugin
strict: false
# Required for vision/multimodal training
skip_prepare_dataset: true
remove_unused_columns: false
sample_packing: false
chat_template: gemma4
datasets:
- path: HuggingFaceH4/llava-instruct-mix-vsft
type: chat_template
split: train[:100]
val_set_size: 0
output_dir: ./outputs/gemma4-e2b-vision-lora
adapter: lora
sequence_len: 2048
pad_to_sequence_len: false
lora_r: 16
lora_alpha: 32
lora_dropout: 0
# Target language model only — vision encoder is frozen via freeze_mm_modules
lora_target_modules: 'model.language_model.layers.[\d]+.(_checkpoint_wrapped_module.)?(mlp|self_attn).(up|down|gate|q|k|v|o)_proj'
gradient_accumulation_steps: 4
micro_batch_size: 1
num_epochs: 1
max_steps: 10
optimizer: adamw_torch_8bit
lr_scheduler: cosine
learning_rate: 0.0002
bf16: auto
tf32: true
gradient_checkpointing: true
gradient_checkpointing_kwargs:
use_reentrant: false
logging_steps: 1
sdp_attention: true
warmup_ratio: 0.1
weight_decay: 0.0
wandb_project:
wandb_entity:
wandb_watch:
wandb_name:
wandb_log_model: